The fixation probability of a single mutant with a strategy A in a population of \((N-1)\)  agents using B is given by [1]}, [2]}
\(\rho _{B,A} = \left(1 + \sum _{i = 1}^{N-1} \prod _{j = 1}^i \frac{T^-(j)}{T^+(j)}\right)^{-1}.\) 
